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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Vast fields and forest slopes of the iconic Mount Diablo State Park within the Walnut Creek in California
Weather in January
January, like December, is another mild winter month in Walnut Creek, California, with an average temperature ranging between max 56.8°F (13.8°C) and min 42.4°F (5.8°C). The transition into January is marked with an average high-temperature of a still refreshing 56.8°F (13.8°C), showing an insignificant shift from December's 55.4°F (13°C). Weather in January »
Weather in February
February, the last month of the winter in Walnut Creek, is another mild month, with an average temperature ranging between min 43.2°F (6.2°C) and max 59.7°F (15.4°C). Upon the onset of February, Walnut Creek witnesses an average high-temperature of a still refreshing 59.7°F (15.4°C), showing a close resemblance to the prior month. Weather in February »
Weather in March
March, the first month of the spring in Walnut Creek, is an enjoyable month, with an average temperature varying between 44.8°F (7.1°C) and 62.8°F (17.1°C). The arrival of March sees a recorded average high-temperature of an enjoyable 62.8°F (17.1°C), showing little divergence from the previous month's conditions. Weather in March »
Weather in April
April in Walnut Creek, California, is an agreeable spring month, with an average temperature ranging between min 46.4°F (8°C) and max 68°F (20°C). The transition into April is marked with an average high-temperature of an agreeable 68°F (20°C), showing an insignificant shift from March's 62.8°F (17.1°C). Weather in April »
Weather in May
The last month of the spring, May, is another pleasant month in Walnut Creek, California, with an average temperature varying between 50.2°F (10.1°C) and 72.3°F (22.4°C). May brings an average high-temperature of a still pleasant 72.3°F (22.4°C), showing a slight difference from April's 68°F (20°C). Weather in May »
Weather in June
June, the first month of the summer in Walnut Creek, is a moderately hot month, with an average temperature varying between 79.9°F (26.6°C) and 54.5°F (12.5°C). June's onset witnesses a minor shift in the average high-temperature, moving from a pleasant 72.3°F (22.4°C) in May to a warm 79.9°F (26.6°C). Weather in June »
Weather in July
July, like June, in Walnut Creek, California, is another warm summer month, with an average temperature fluctuating between 56.1°F (13.4°C) and 82.8°F (28.2°C). July, noted for its average high-temperature of 82.8°F (28.2°C) and an average low-temperature of 56.1°F (13.4°C), is considered the warmest month. For most parts of July, the heat index is calculated to be a hot 86°F (30°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Walnut Creek, California, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 81.7°F (27.6°C). The initiation of August records an average high-temperature of a still moderately hot 81.7°F (27.6°C), displaying a near consistency with the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Walnut Creek, California, with an average temperature fluctuating between 57.2°F (14°C) and 81.5°F (27.5°C). The advent of September denotes an average high-temperature of a still moderately hot 81.5°F (27.5°C), subtly different from August's 81.7°F (27.6°C). Weather in September »
Weather in October
October, like September, in Walnut Creek, California, is a moderately hot autumn month, with an average temperature ranging between max 74.1°F (23.4°C) and min 54.3°F (12.4°C). In Walnut Creek, the average high-temperature in October slightly decreases from 81.5°F (27.5°C) in September to a still warm 74.1°F (23.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Walnut Creek, is another refreshing month, with temperature in the range of an average low of 47.5°F (8.6°C) and an average high of 64°F (17.8°C). The arrival of November corresponds with a temperature reduction, down from October's warm 74.1°F (23.4°C) to a comfortable 64°F (17.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a refreshing month in Walnut Creek, California, with an average temperature fluctuating between 55.4°F (13°C) and 42.4°F (5.8°C). In Walnut Creek, California, the lowest average temperatures are observed in December, with a high of 55.4°F (13°C) and a low of 42.4°F (5.8°C). Weather in December »
Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How many days does it rain in Walnut Creek?
In Walnut Creek, California, during the entire year, the rain falls for 68.7 days and collects up to 11.26" (286mm) of precipitation.
When is the lowest UV index in Walnut Creek?
The months with the lowest UV index in Walnut Creek, California, are January, February, November and December, with an average maximum UV index of 3.
What is the wettest month in Walnut Creek?
The month with the most rainfall is February, when the rain falls for 8.3 days and typically aggregates up to 2.4" (61mm) of precipitation.
What is the most humid month in Walnut Creek?
With an average relative humidity of 74%, March is the most humid month in Walnut Creek.
When is Daylight Saving Time (DST) in Walnut Creek?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Walnut Creek, California, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When are the longest days in Walnut Creek?
With an average of 14h and 48min of daylight, June has the longest days of the year in Walnut Creek.
What are the months with the highest UV index in Walnut Creek?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What part of the year is the hottest in Walnut Creek?
July is Walnut Creek's warmest month, registering average high temperatures of 82.8°F (28.2°C) and lows of 56.1°F (13.4°C).
What is the driest month in Walnut Creek?
The months with the least rainfall in Walnut Creek, California, are July and August Rain falls for 1.4 days and accumulates 0.04" (1mm) of rain.
What month has the most sunshine in Walnut Creek?
With an average of 12h of sunshine, July has the most sunshine of the year.
What are the least humid months in Walnut Creek?
The months with the lowest humidity are September and October, with an average relative humidity of 58%.
What are the coldest months in Walnut Creek?
December, with its high-temperature average of 55.4°F (13°C) and a low-temperature average of 42.4°F (5.8°C), is the coldest month.
What is the month with the shortest days in Walnut Creek?
With an average of 9h and 36min of daylight, December has the shortest days of the year in Walnut Creek.
What is the month with the least sunshine in Walnut Creek?
The month with the least sunshine in Walnut Creek, California, is December, with an average of 5.8h of sunshine.
Average temperature
Walnut Creek, CA
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (55.4°F).
The month with the highest average low temperature is September (57.2°F).
The coldest months (with the lowest average low temperature) are January and December (42.4°F).
Average pressure
Walnut Creek, CA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Walnut Creek, CA
- Average wind speed in January:
4.6mph - Average wind speed in February:
5.5mph - Average wind speed in March:
5.9mph - Average wind speed in April:
6.5mph - Average wind speed in May:
7.3mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.3mph - Average wind speed in September:
5.7mph - Average wind speed in October:
4.8mph - Average wind speed in November:
4.4mph - Average wind speed in December:
4.9mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).
Average humidity
Walnut Creek, CA
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (58%).
Average rainfall
Walnut Creek, CA
- Average rainfall in January:
1.97" - Average rainfall in February:
2.4" - Average rainfall in March:
1.85" - Average rainfall in April:
0.67" - Average rainfall in May:
0.51" - Average rainfall in June:
0.12"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.08" - Average rainfall in October:
0.47" - Average rainfall in November:
1.3" - Average rainfall in December:
1.81"
The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Walnut Creek, CA
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
6.9 days - Average rainfall days in May:
4.2 days - Average rainfall days in June:
1.5 days
- Average rainfall days in July:
1.4 days - Average rainfall days in August:
0.8 days - Average rainfall days in September:
2.3 days - Average rainfall days in October:
4.4 days - Average rainfall days in November:
6.8 days - Average rainfall days in December:
10.2 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight / Average sunshine
Walnut Creek, CA
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
6h and 0min - Average sunshine in February:
6h and 1min - Average sunshine in March:
7h and 5min - Average sunshine in April:
10h and 2min - Average sunshine in May:
10h and 5min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 5min - Average sunshine in September:
11h and 1min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 4min - Average sunshine in December:
5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days
Walnut Creek, CA
- Average sunshine days in January:
20.7 days - Average sunshine days in February:
19.1 days - Average sunshine days in March:
17.5 days - Average sunshine days in April:
22.3 days - Average sunshine days in May:
26.2 days - Average sunshine days in June:
27.6 days
- Average sunshine days in July:
29.3 days - Average sunshine days in August:
29.6 days - Average sunshine days in September:
27.5 days - Average sunshine days in October:
25.8 days - Average sunshine days in November:
22.3 days - Average sunshine days in December:
20.1 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (17.5 days).
Average UV index
Walnut Creek, CA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Walnut Creek, CA
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility
Walnut Creek, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Walnut Creek, California, USA
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